Last week, Ian and four friends traded Transformers cards, swapping
cards back and forth until each had exchanged one of his doubles for a
card he didn't originally have. As it turned out, no two of the boys
ended up simply exchanging the Transformers doubles they brought.
Can you swap the clues below to solve the Logic Puzzle of each friend's
full name, the character on the Transformers card he traded away, and
the character on Transformers card he acquired through the swapping?

The fan who traded away the Megatron card, who isn't the Vaughn boy,
ended up with Kevin's double.